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प्रश्न
Why does we soak over washed clothes in ultramarine?
लघु उत्तरीय
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उत्तर
Ultramarine is fluorescent because it absorbs ultraviolet radiation from sunlight and emits visible blue, violet, and indigo light. This process compensates for the blue-violet light lost through scattering in the atmosphere, which allows the clothes to reflect a more balanced mixture of colours and appear whiter.
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